8.) Which is an example of a chemical change? *

Burning wood.

Souring milk.

Combining base and acid.

Digesting food.

Cooking an egg.

Making caramel from heating sugar.

Baking a cake.

Rusting of iron.

Explanation:

These are all examples of chemical changes, because they cannot be changed back to their normal position.

Rusting

Explanation:when the rain hits metal, it starts to rust. You can not change that.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

i think the miocene epoch spans the time from 23 million to 12 million years ago.